Automatic sequential unit



June 6, 1967 M. KA'ss AUTOMATIC SEQUENTIAL UNIT Filed July 1, 1964 7 Sheets-Sheet l ,INVENTOR. I

Melvin Kass M. KASS June 6, 1967 AUTOMATIC S EQUENT IAIJ UN]. '1'

7 Sheets-Sheet 2.

Filed July 1, 1964 INVENTOR June 6, 1967 M. KASS 3,323,476

AUTCMATIC SEQUENTIAL UNIT Filed Juiy 1, 1964 M '7 Sheeis-Sheet 5 I v 17 as I 219.4.

I N VENTOR. Nell m Kass June 6, 1967 I ss 3,323,476

AUTOMATIC SEQUENTIAL UNIT Filed July 1, 1964 '7 Sheets-$heet 4 INVENTOR. B We! 1 471 K425:

WW ATTDFWE 5.

'7 Sheets-Sheet 6 ..I I IIIIIII.

M. KASS AUTOMATIC SEQUENTIAL UNIT ADVANCF CLAMP EEN/N- MACH.

RE T IEN l I I I I 60 4 I a f/Z2 Raf/:55

June 6, 1967 Filed July 1, 1964 5 DEM WI m m W .m v I m AT .0 w w w w R w W L Y c ///M IR CMMP June 6, 1967 M. KAss AUTOMATIC SEQUENTIAL UNIT 7 Sheets-Sheet Z ETnZZZ Filed July 1, 1964 INVENTOR.

Kass

United States Patent This invention relates generally to automatic sequential units, such as sewing machines, button sewing machines, bar tacking machines, snap fastening machines, punch press machines, and similar machines requiring sequential operations. More specifically it relates to button hole sewing machines of the type used in the garment production industry.

It is generally well known to those skilled in the art that labor costs and production time are vital factors in the mass production of garments; and accordingly various operations on the garments are attempted to be rapidly accomplished by minimum persons so that the garment can be profitably sold in a highly competitive industry.

Until the present time the stitching of button holes upon shirts, coats and the like has been accomplished in a semiautomatic manner wherein the operator manually moves the garment into position under the sewing machine needle, after which a switch is depressed for the sewing machine to automatically stitch the button hole. Such procedure still relies upon an individuals dexterity in repositioning the garment under the needle in minimum time after each button hole is sewn, and continuous repetition of so frequent an operation is certain to tire and slow down the operator after awhile, resulting in lower production quantity and relatively higher production costs. Additionally such procedure under such continuously rapid manual relocation of the garment is certain to occasionally result in an erroneous relocation thereof and production of a faulty garment which must then be sold as irregular and at lower price thus cutting into the profit. This situation still in practice is objectionable.

Attempts have in the past been considered for using a battery of individual button hole sewing machines for sewing simultaneously all the button holes on a garment, each machine being properly positioned respective to another. However such solution is not practical in view that conventional button hole sewing machines are too large to permit their stitching needles to get sufficiently close enough together to produce conventionally spaced apart button holes upon a garment. Furthermore, even if it were possible, the machines would require laborious relocation for various size garments wherein the button holes are spaced a different distance apart. Additionally, the cost of such device employing a plurality of sewing machines would become prohibitive, and in case of a break down of any one there-of, all the machines would be tied up.

Accordingly, it is a principal object of the present invention to provide a button hole sewing machine having self contained means to automatically stitch a plurality of button holes in a garment and thus eliminate the need of an operators attention to reposition the garment manually for each button hole.

Another object of the present invention is to provide a button hole sewing machine wherein the button holes are progressively made one after another thereby eliminating the requirement of more than a single button hole sewing machine mechanism.

Still another object of the present invention is to provide a button hole sewing machine wherein the operator needs only to affix the garment in a single position upon the machine, then depress a start button for the machine to automatically sew a plurality of button holes progressively and unattended, during which time the operator is free "ice to likewise afiix a garment to other similar machines and start the other machines operating, after which the operator can return to the first machine, remove therefrom the button hole-finished garment and affix another garment therein to repeat the process. Thus a single operator can handle many machines and substantially increase his production quota within any period of time.

Yet another object is to provide a button hole sewing machine having means to sew a plurality of button holes along a singular straight line upon the garment.

Other objects are to provide an attachment for a button hole sewing machine, button sewing machine, bar tacking machine, snap fastening machine, punch press machine, and similar machines requiring sequential operations, which is simple in design, inexpensive to manufacture, rugged in construction, easy to use and efficient in operation.

These and other objects will be readily apparent upon a study of the following specification and the accompanying drawings, wherein:

FIGURE 1 is a perspective view of the present invention.

FIG. 2 is a cross sectional view taken on line 2-2 of FIG. 1.

FIG. 3 is a cross sectional view taken on line 33 of FIG. 2.

FIG. 4 is an end elevational view of the apparatus shown partly in cross section.

FIG. 4a is an auxiliary electro-pneurnatic circuit of a sewing machine cut off mechanism incorporated in the present apparatus.

FIG. 5 is a perspective view of a gauge.

FIG. 6 is a similar view only of a different size gauge.

FIG. 7 is a side elevational view of a microswitch used in the present apparatus.

FIG. 8 is a fragmentary perspective view of the apparatus shown in operative use.

FIGS. 9a and 9b in combination are an electricalpneumatic circuit of the invention.

FIG. 10 is a cross sectional view through 1l-10 o FIG. 1.

FIG. 11 is an exploded perspective view of a portion of the carriage and associated supporting structure, and

FIG. 12 is a perspective view of a finished shirt made upon a machine as is herein described.

Referring now to the drawings in detail the numeral 10 represents an automatically progressive button hole sewing machine according to the present invention wherein there is an apparatus 11 mounted upon a table 12 having legs 13.

The apparatus includes a conventional button hole sewing machine 14 which may be of any suitable make and model, and which includes a base 15 having a base plate 16, a head 17 mounted upon the base, a knife 18 for slotting a garment material, a needle 19 on a needle bar 20 carried on the head, and a mechanism (not shown) within the base and head for stitching a button hole 21 upon the garment material 22 (see FIG. 8). The sewing machine 14 is mounted upon the top side 23 of table 12.

A pair of tubular members 24 of rectangular cross sectional configuration are mounted in parallel spaced apart relation upon the table top, the members 24 extending beyond the forward edge 25 of the table. A pair of secondary tubular members 26 are mounted across the top of tubular members 24 and serve as track rails for a carriage 27 supported slidably free thereupon.

The carriage 27 includes a flat panel 28 having a pair of parallel spaced apart angle-shaped guides 29 rigidly aflixed upon its underside; the guides being in sliding contact with the track rails. A longitudinal slot 30 through panel 28 extends in a direction parallel to the direction of travel of the carriage. This travel direction 4.) may be assumed as transverse upon the apparatus in view that it is parallel to the forward edge of the table. Thus it is understood that the guides and track rails extend in a transverse direction. A slidable plate 31 is supported upon .the panel 28 by means of a pair of screws 32 passing through circular openings in the plate and through the slot the screws carrying a bar 33 on the underside of the panel which permits drawing the plate tightly against the panel and frictionally securing the plate in a predetermined position respective to the panel.

Upon the plate there is mounted an air clamp unit 34 comprised of a cylinder enclosing a piston 35 having a downwardly extending piston rod 36. A block 37 is secured to the lower end of the piston rod, the block being in selective clamp engagement with the upper side of the plate. An air hose 38 communicates between the upper portion of the cylinder and a compressed air source. A vent opening 39 on the lower portion of the cylinder serves to exhaust any air in the cylinder chamber under the piston to permit rapid descent thereof into clamping position when so desired.

A second air clamp unit 40 is mounted upon the panel 28 in alignment along an imaginary transverse line passing through air clamp unit 34. The air clamp unit 40 likewise has a cylinder 41, piston 42, downward extending piston rod 43, vent opening 44, and air hose 45. The lower end of the piston rod 43 abuts with the upper side 46 of the panel when in clamping position.

The plate 31 has an arrow indication 47 engraved upon its upper side 48, the arrow being selectively aligned with graduations 49 engraved upon the uppper side 46 of the panel. Each of the graduations has legend 50 engraved adjacent thereto indicating various garment sizes. In the case illustrated, the garment represents a shirt and the sizes shown in FIG. 1 represent shirt sizes.

A pair of threaded openings 51 are provided in panel 28 and one of a plurality of control bars 52 are removably attached upon the upper side of the panel by means of screws 53 passing through the control bar and secured in openings 51. Each control bar has engraved upon its upper side 54 a legend 55 indicating a shirt garment size which corresponds to one of the legends 50 on the upper panel. The panel 28 has a second transverse slot 56 located directly under a portion of the control bar, and each control bar has a plurality of downwardly extending studs 57 passing through the slot 56. As shown in FIG. 2 all the studs 57a are of same length except the left-most stud 571) which is of greater downward length.

Three microswitches 58, 59 and are secured in stationary position upon the apparatus and are in the path of travel of the studs 57 for purpose of operating various electrical circuits. The microswitch 58 is secured upon the top of right tubular member 24a and the microswitch 59 is secured above microswitch 58, whereby the switch 59 is in the path of every study 57a and 57b while the switch 58 is in the path of stud 57b only which extends sufficiently downward to reach the tripping mechanism of switch 58. It is to be noted that the switch 58 is mounted slightly more to the right side of the apparatus than the switch 59 (as shown in FIGS. 2 and 3) for a reason which will be explained hereinafter. The microswitch 60 is mounted upon the top of left tubular member 24b (see FIGS. 2 and 3) and is accordingly on the same elevation as microswitch 58 and thus is activated by a stud 570 only.

Upon the under side of each tubular member 24 there is mounted a pillar block 61 which supports a main pneumatic cylinder 62 therebetween. Within the chamber 63 of the cylinder there is a slidable piston 64 having a piston rod 65 extending out of one end of the cylinder, the piston rod carrying an upwardly extending post 66 secured between nuts 67 and 68 threadedly mounted on the piston rod. A stud 69 protrudes upwardly from the upper end of the post, the stud 69 being engaged within an opening 70 in the panel 28.

An air intake and exhaust post 71 at one end of the cylinder communicates with an air hose 72, and an air intake and exhaust post 73 at the opposite end of the cylinder communicates with an air hose 74, each of the hoses leading to a compressed air source via a pneumatic circuit shown in FIGS. 3 and 9b.

Additionally the present apparatus includes an electrical control box 75 mounted in elevated position upon an upstanding post 76 over the tubular member 2417, where it may be conveniently manually operated by a person. The controls carried by box 75 comprise a return switch 76, an advance switch 77, a sew only switch 78 and a clamp release push button 79. The electrical wiring from the control box extends through post 76 into the tubular member 24b. It is to be noted that the tubular members 24 serve to carry electrical wiring therethrough thereby maintaining an orderliness and preventing loose wires scattered about (see FIG. 1).

An electric box 80 is mounted upon the table top and it contains transformers, relays and the like parts which form elements in the electrical circuit of the apparatus.

A start switch 81 is conveniently mounted upon the forward end of tubular member 24b.

Various pneumatic valves associated with operation of the air clamps, main pneumatic cylinder and a sewing machine clutch cylinder are located in the area bounded by the forward edge of the table, between the tubular members 24 and above the main cylinder (see FIGS. 2 and 3).

The clutch cylinder 82 (FIG. 4) on the sewing machine 10 is powered by air from hose 83. The piston 84 of the cylinder has a piston rod 85 that operates a bell crank 86 to slip an endless belt 87 between an idler pulley 88 and a pulley 89 that drives the button hole sewing mechanism of the machine. The belt 87 is passed around a pulley 90 mounted on shaft 91 of a motor 92. The above sewing machine drive forms a standard part of such machines generally.

A bracket 92 is attached to the sewing machine head 17 as shown in FIG. 1, and a microswitch 93 is mounted thereupon to be engaged by a lever 94 pivotable about shaft 95 of the sewing machine 10.

The pneumatic valves of the apparatus are shown in FIGS. 2, 3 and 9b and include a three Way double coil valve 96 attached to end of hose 72. Valve 96 is connected by air tube 97 to regulator 98 which is connected by an air tube 99 to T 150 to three way double coil valve 100, which in turn is connected by air tube 101 to one cross arm end of T-fitting 102. The other end of the cross arm is connected to air tube 103 leading to T 151 three way valve 104 and air tube 105 leads to a regulator 106 connected by air tube 107 to three way double coil valve 108 which in turn is connected to end of hose 74. The T fitting 102 is also connected by means of a hose 109 to an air compressor (not shown in the drawing).

It is to be noted that the three way double coil valve 96 controls movement of air in one end of the main cylinder 62 while three way double coil valve 108 controls movement of air in the opposite end of the main cylinder. The three-way double coil valve controls the air movement to air clamp valve units 34 and 40. The three way valve 104 controls movement of air to the sewing machine cylinder 82.

As shown in FIGS. 5 and 6, the control bars are each designed to regulate the positions of the button holes respective to the size of the shirt. In the smaller shirts the button holes are most probably closer together and there may be a lesser number of button holes.

In FIG. 7 there is shown a typical microswitch employed in the present apparatus. The microswitch is of the type that permits over-riding of a stud in one direction only without the switch being operated. Thus movement of a stud 57 into the direction indicated by the solid arrow will trip the switch wheras a stud approaching the switch from the direction indicated by the broken line arrow will override without actuating the switch. This is due to contact roller 110 being supported on an arm 111 pivotable in one direction about pin 112 but restrained from pivoting in the opposite direction because a spur 113 on the arm 111 abuts end of arm 114 of the switch. A spring (not shown) normally keeps the arm in the position indicated by solid lines.

Additionally the apparatus includes a conventional foot switch 115 (shown on drawing 9a) for operating the air clamp units in a manner as will be shown in the circuit.

It is to be noted that this apparatus can be designed to accommodate a pneumatic cylinder fitted with a hydraulic checking device or a hydraulic system instead of the main air cylinder in the application.

The electrical circuits of the apparatus passing through the various switches operate the various electrically controlled valves to direct movement of the compressed air. The electrical circuit additionally includes a main switch 120, transformers 121 and 122, capacitor 123, rectifier 124, capacitor 125, rectifier 126, a DC. pole relay 127, DC. relays 128 and 129 of the two-pole type, to correspOnd to drawing 9a, a DC. two pole relay 128, and an AC. two pole relay 129, all of which are contained in the electric box 80.

In FIG. 4a, cut off mechanism 130 is shown which is incorporated in the present apparatus and which is for the purpose of immediately stopping the button hole sewing machine operation in case the stitching thread 131 accidently breaks. This mechanism includes a microswitch 132 which is maintained in normally open position due to the thread being in tension. Should the thread break, the switch closes an electrical circuit through a transformer 133 and a 12-volt three-way solenoid switch 134 which opens allowing movement of air through hose 135 into the upper end of cylinder 82, causing downward movement of the piston 84 and transfer of belt 85 from operating pulley 89 to inoperating idler pulley 88, thus immediately shutting off operation of the sewing machine 14.

In operative use the proper control bar is selected for the size and style of shirt, the control bar determining where the button holes will be made on the shirt. The control bar is secured upon the panel as shown in FIG. 1 and the plate 31 is adjusted in slot 30 so that the arrow 47 is aligned with the particular graduation 49 which carries the same legend 50 as the legend 55 upon the particular control bar being used. The motor 92 is turned on. The air clamp units are now in open position and the operator inserts a shirt under the air clamp units 34 and 40 and also under the button hole sewing machine clamp 116 (as shown in FIG. 8). The air clamp unit 40 receives the collar 117 whereas the air clamp unit 34 receives the lower edge 118 of the shirt. As shown in the drawing, the shirt is stretched flat between the clamp units with the shirt edge 119 therebetween upon which button holes are to be sewn for the purpose of matching buttons sewn on a mating edge (see FIG. 12) of the shirt. The operator now depresses the foot switch causing the air clamps to hold the shirt in position during the full cycle of the operation. The operator then depresses the button of the start switch 81 after which the operator is free to attend another machine. When the start switch button is depressed it activates the full apparatus cycle for sewing all the required button holes along edge 119 of the shirt.

During this cycle the following mechanical movements take place. The pneumatic valve 104 actuates valve 82 causing the belt 87 to move into engagement with the button hole sewing mechanism of the machine which thus immediately sews the uppermost button hole near the shirt collar. When this is completed the button hole sewing mechanism pivots lever 94 to trip microswitch 93 which in turn activates electrically operated valves 96 and 108 causing air to be delivered into the left side of the main cylinder 62 and exhausted from the right side thereof thus causing the piston 64 to move toward the right and carrying along therewith the carriage 27 which is attached by means of post 66 to the piston rod 65. As the carriage moves toward the right, the stud 57a which is closest to the right trips microswitch 59. This causes the carriage movement to be halted, by putting air into both ends of cylinder 62, and the button hole sewing mechanism to again repeat a button hole sewing operation, after which the carriage is again moved further toward the right due to additional air delivered into the left side of the main cylinder and release of air from the right side thereof. The next stud now trips the microswitch 59 causing a third button hole to be sewn in the new position of the shirt under the sewing machine needle. Thereafter the carriage advances again further right until the longer stud 5711 trips switch 59 and again causes a button hole to be sewn in the newly advanced position of the shirt under the needle. Thereafter the carriage advances further to the right, however in a relatively short distance the lower portion of stud 5711 trips microswitch 58 which activates a pneumatic circuit causing air to be delivered into the right side of the main cylinder and removed from the left side thereof. Thus the carriage is now made to return to its starting position. During this leftward travel the studs override the switches 58 and 59 preventing actuation thereof. At the extreme leftward travel of the carriage, the stud 570 trips microswitch 60, oppositely mounted, causing the air clamp units to open releasing their hold upon the shirt. The operator now returns to the machine, removes the finished shirt, inserts another and repeats the operation.

During the individual cycle of the button hole sewing mechanism operation, the lever 94 releases the microswitch 93 causing the capacitor pack 123 to charge. When this cycle is finished, the lever depresses microswitch 93 causing the capacitor to discharge and trip relay 127 which in turn allows the carriage to advance or move to the right. The carriage moves until a stud trips microswitch 59 causing capacitor 125 to discharge, tripping relay 127 which trips valves 96 and 108 placing air into both ends of main cylinder 62, causing the carriage to stop its travel, and also tripping the valve 104 which starts the button hole sewing cycle again into operation.

It is to be noted that the control box provides manually operative switches whereby a person may vary the normal cycle operation. Thus the switches designated return, advance, sew only and the push button designated clamp release will provide complete adjustment of the apparatus operation for any particular situation.

While various changes may be made in the detail construction, it is understood that such changes will be within the spirit and scope of the present invention as is defined in the appended claims.

Having thus set forth my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In an automatically sequential unit for button hole sewing mechanisms and the like, the combination of a button hole sewing mechanism, said button hole sewing mechanism being stationarily mounted, a carriage, means for moving said carriage respective to said button hole sewing mechanism, means on said carriage to carry a garment, means for releasably securing said garment to said carriage, automatic means for intermittently moving and intermittently stopping said carriage respective to said button hole sewing mechanism, automatic means operating said button hole sewing mechanism to sew a button hole upon said garment during the time said carriage is intermittently stopped, a table, said button hole sewing mechanism being securely mounted on said table, a motor means, said table supporting said motor means for driving said button hole sewing mechanism, said table having a framework affixed thereto upon which said carriage is movable, said framework comprising a pair of spaced apart tubular members afl'ixed upon the top of said table, said table having a forward edge, said tubular members projecting forwardly beyond the said forward edge, a pair of secondary tubular members aflixed in parallel spaced apart relation across the projecting portion of the first said tubular members, said secondary tubular members forming track rails for said carriage, said carriage having a pair of spaced apart longitudinal extending portions in sliding contact upon said track rails, a main fiuid cylinder securely mounted on the underside of said forwardly projecting portions of said tubular members, said main cylinder having a piston and piston rod, said piston rod extending out of one end of said cylinder, an upwardly extending post afiixed to the outer end of said piston rod, said post being secured at its upper end to said carriage, said fluid cylinder providing a means for moving said carriage respective to said button hole sewing mechanism, said carriage comprising a panel having a flat upper side and a fiat bottom side, said longitudinal extending portions being secured on said bottom sides, said top side having a longitudinal first slot, a plate carried upon the upper side of said panel, said plate having openings therein, screws extending through said openings and slot, a threaded block on the underside of said panel receiving said screws for securing said plate in longitudinally selected position to said panel, said plate carrying a first air clamp unit and said panel carrying a second air clamp unit, both of said air clamp units being on an imaginary line which is parallel to the travel direction of said carriage, said panel providing said means for carrying said garment, and both said air clamp units providing said means for securing said garment to said earriage.

2. In an automatically sequential unit for button hole sewing mechanisms and the like, the combination as set forth in claim 1, wherein one of a plurality of longitudinal control rods is selectively attached upon said panel, said control rod having a row of a plurality of downwardly extending studs at predetermined distances apart, said panel having a second longitudinal slot thercthrough, through which said studs protrude downwardly, and said tubular members which project forwardly beyond the forward edge of said table having microswitches secured thereupon, said studs engaging said microswitches during said intermittent travel in a rightward and leftward direction of said carriage mechanisms actuated by said microswitches to intermittently halt and start said carriage in both travel directions and sew said button holes.

3. In an automatically squential unit for button hole sewing mechanisms and the like, the combination as set forth in claim 2, wherein all except one of said studs are of relatively short length and the said one stud is of relatively longer length, and said microswitches comprise a first microswitch for activating mechanism for halting the travel of said carriage and starting the button hole sewing mechanism to sew a single button hole on said garment, said first microswitch being located at relatively higher elevation than the other of said microswitches and being in the patch of contact by all of said short and longer downwardly extending studs, a projecting right tubular member, a second microswitch located on said projecting right tubular member, said second microswitch activating said mechanisms to halt a right direction travel of said carriage and start a leftward return travel thereof, and a third microswitch located on a projecting left tubular member, said third microswitch activating said mechanisms to stop a leftward direction travel of said carriage and release of said air clamp units freeing said garment from said carriage, said longer stud being at the left end of said row of studs, said second and third microswitches being in the path of contact by said longer stud only.

4. In an automatically sequential unit for button hole sewing mechanisms and the like, the combination as set forth in claim 3, wherein a fourth microswitch is located adjacent the button hole sewing mechanism, said button hole sewing mechanism having a pivotable lever, means on said lever being pivotally moved at the end of a button hole sewing cycle, said lever activating said fourth microswitch at said end of said sewing cycle in order to resume the travel of said carriage in a rightward direction.

5. In an automatically sequential unit for button hole sewing mechanisms and the like, the combination as set forth in claim 4, including a pneumatic system, source means delivering compressed air into said pneumatic system, said system including said main cylinder, said air clamps and further including a pneumatic cylinder on said button hole sewing mechanism for clutching said mechanism into operating position, said system further including a plurality of electrically cont-rolled pneumatic valves, pneumatic lines between said compressed air source and said cylinders, and said valves intercepting said pneumatic lines.

6. In an automatically sequential unit for button hole sewing mechanisms and the like, the combination as set forth in claim 5, including an electrical circuit between said microswitches and said electrically controlled valves, a foot pedal switch, said foot switch adapted to close said air clamps, a start switch, said starting switch adapted to initiate initially a mechanism to start operation of said button hole sewing mechanism, and a control box, said control box having a plurality of switches for selective movement of said carriage for selective sewing only and selective clamp release.

7. In an automatically sequential unit for button hole sewing mechanisms and the like, the combination as set forth in claim 6, wherein said electrical circuit includes a first relay, a first capacitor, a second capacitor and a three pole relay coil, said fourth microswitch being released by said button hole sewing mechanism lever during the sewing cycle of said mechanism, said fourth microswitch causing the said first capacitor to charge, and when said sewing cycle is finished, said lever depressing said fourth microswitch, causing said first capacitor to discharge and trip said first relay allowing said carriage to travel rightward, and one of said carriage studs tripping said first microswitch causing said second capacitor to discharge and trip said three pole relay coil causing said three way valves controlling air movement on each end of said main cylinder to lock air therewithin.

8. In an automatically progressive button hole sewing machine, the combination as set forth in claim 7, a cut off mechanism for immediately stopping the button hole sewing machine upon a stitching thread being broken, said mechanism including a microswitch adapted to be maintained in an open position by a tensioned thread and adapted to be closed upon the thread being broken, a relay open valve in circuit with said microswitch and cylinder device, said sewing machine having a pulley and drive belt, and lever means operable upon drive belt upon actuation of cylinder device to disengage the belt from the sewing machine pulley.

References Cited UNITED STATES PATENTS 2,899,919 8/1959 Myska 112 102X 2,944,496 7/1960 Gardner 1l265 3,001,489 9/1961 Bond et al 112-2 3,082,719 3/1963 Zeitlin 112-65 3,224,393 12/1965 Adams et al. 1l22 JORDAN FRANKLIN, Primary Examiner.

H. H. HUNTER, Assistant Examiner.

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No 3 ,323 ,476 June 6 1967 Melvin Kass It is hereby certified that error appears in the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.

In the heading to the printed specification, lines 3 to 5, strike out assignor to Selden Manufacturing Corporation, Selden, N. Y. a corporation of New York", and insert instead (Selden, Long Island, N. Y.)

Signed and sealed this 9th day of January 1968.

(SEAL) Attest:

EDWARD J. BRENNER Edward M. Fletcher, Ir.

Commissioner of Patents Attesting Officer 

1. IN AN AUTOMATICALLY SEQUENTIAL UNIT FOR BUTTON HOLE SEWING MECHANISMS AND THE LIKE, THE COMBINATION OF A BUTTON HOLE SEWING MECHANISM, SAID BUTTON HOLE SEWING MECHANISM BEING STATIONARILY MOUNTED, A CARRIAGE, MEANS FOR MOVING SAID CARRIAGE RESPECTIVE TO SAID BUTON HOLE SEWING MECHANISM, MEANS ON SAID CARRIAGE TO CARRY A GARMENT, MEANS FOR RELEASABLY SECURING SAID GARMENT TO SAID CARRIAGE, AUTOMATIC MEANS FOR INTERMITTENTLY MOVING AND INTERMITTENTLY STOPPING SAID CARRIAGE RESPECTIVE TO SAID BUTTON HOLE SEWING MECHANISM, AUTOMATIC MEANS OPERATING SAID BUTTOH HOLE SEWING MECHANISM TO SEW A BUTTON HOLE UPON SAID GARMENT DURING THE TIME SAID CARRIAGE IS INTERMITTENTLY STOPPED, A TABLE, SAID BUTTON HOLE SEWING MECHANISM BEING SECURELY MOUNTED ON SAID TABLE, A MOTOR MEANS, SAID TABLE SUPPORTING SAID MOTOR MEANS FOR DRIVING SAID BUTTON HOLE SEWING MECHANISM, SAID TABLE HAVING A FRAMEWORK AFFIXED THERETO UPON WHICH SAID CARRIAGE IS MOVABLE, SAID FRAMEWORK COMPRISING A PAIR OF SPACED APART TUBULAR MEMBERS AFFIXED UPON THE TOP OF SAID TABLE, SAID TABLE HAVING A FORWARD EDGE, SAID TUBULAR MEMBERS PROJECTING FORWARDLY BEYOND THE SAID FORWARD EDGE, A PAIR OF SECONDARY TUBULAR MEMBERS AFFIXED IN PARALLEL SPACED APART RELATION ACROSS THE PROJECTING PORTION OF THE FIRST SAID TUBULAR MEMBERS, SAID SECONDARY TUBULAR MEMBERS FORMING TRACK RAILS FOR SAID CARRIAGE, SAID CARRIAGE HAVING A PAIR OF SPACED APART LONGITUDINAL EXTENDING PORTIONS IN SLIDING CONTACT UPON SAID TRACK RAILS, A MAIN FLUID CYLINDER SECURELY MOUNTED ON THE UNDERSIDE OF SAID FORWARDLY PROJECTING PORTIONS OF SAID TUBULAR MEMBERS, SAID MAIN CYLINDER HAVING A PISTON AND PISTON ROD, SAID PISTON ROD EXTENDING OUT OF ONE END OF SAID CYLINDER, AN UPWARDLY EXTENDING POST AFFIXED TO THE OUTER END OF SAID PISTON ROD, SAID POST BEING SECURD AT ITS UPPER END TO SAID CARRIAGE, SAID FLUID CYLINDER PROVIDING A MEANS FOR MOVING SAID CARRIAGE RESPECTIVE TO SAID BUTTON HOLE SEWING MECHANISM, SAID CARRIAGE COMPRISING A PANEL HAVING A FLAT UPPER SIDE AND A FLAT BOTTOM SIDE, SAID LONGITUDINAL EXTENDING PORTIONS BEING SECURED ON SAID BOTTOM SIDES, SAID TOP SIDE HAVING A LONGITUDINAL FIRST SLOT, A PLATE CARRIED UPON THE UPPER SIDE OF SAID PANEL, SAID PLATE HAVING OPENINGS THEREIN, SCREWS EXTENDING THROUGH SAID OPENINGS AND SLOT, A THREADED BLOCK ON THE UNDERSIDE OF SAID PANEL RECEIVING SAID SCREWS FOR SECURING SAID PLATE IN LONGITUDINALLY SELECTED POSITION TO SAID PANEL, SAID PLATE CARRYING A FIRST AIR CLAMP UNIT AND SAID PANEL CARRYING A SECOND AIR CLAMP UNIT, BOTH OF SAID AIR CLAMP UNITS BEING ON AN IMAGINARY LINE WHICH IS PARALLEL TO THE TRAVEL DIRECTION OF SAID CARRIAGE, SAID PANEL PROVIDING SAID MEANS FOR CARRYING SAID GARMENT, AND BOTH SAID AIR CLAMP UNITS PROVIDING SAID MEANS FOR SECURING SAID GARMENT TO SAID CARRIAGE. 